Knecht



(No ModeL) C. J. RINDERKNECHT'. FLUID PRESSURE REGULATOR.

No. 484,458. Patented Oct. 18, 1892.

(Inma/11114 UNITED STATES PATENT OFFICE.

CHARLES J. RINDERKNEOHT, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO ALBERT KOPP, LUDVIG JAEGER, JULIUS SOIIULER, AND JAMES B.

CURTIS.

FLUID-PRESSURE REGULATOR.

SPECIFICATION forming part of Letters Patent No. 484,458, dated October 18, 1892.

Application filed May 25, 1892. Serial No. 434.337. (No model.) I

To all whom it 1v1/ay concern:

Beit known that I, CHARLES J. BINDER- KNECHT, a citizen of the United States, re-

siding at Indianapolis, in the county of Marion and State of Indiana, have invented new and useful Improvements in Fluid-Pressure Regulators, of which the following is a specication.

My invention relates to improvements in iiuidpressure regulating and reducing valves, and is particularly designed for reducing the pressure of iuids, particularly carbonio-acid gas, to a fixed lower pressure.

The object of my invention is to provide a pressure regulating and reducing valve the regulating mechanism of which will be sensitive, compact, simple, and durable in its construction; .also, to provide suitable means whereby the pressure-regulating lever and its valve will be readily adjusted and set without taking the apparatus apart or disconnecting it from its ittings. I attain these objects by means of the mechanism illustrated Y in the accompanying drawings, in which similar numbers of reference designate like parts throughout the several views.

Figure 1 is a sectional side elevation showing the reducing and pressure regulating mechanism of my apparatus. Fig. 2 is an enlarged sectional plan viewof the adjustable valve and its seat. Fig. 3 is an enlarged detail view of the shorter cam-formed arm of the regulating-lever and the adjustable valve. Fig. 4 is an enlarged detail front elevation of the regulatinglever and its fulcrum-cap. Fig. 5 is a detail perspective view of the diaphragm counter-spring. Fig. 6 is an enlarged detail plan view of the pressure-spring plate, and Fig. 7 is a detail side view and plan of the adj usting-nut of the pressure-sprin g.

1 designates the back and 2 the front casing of the regulating-valve, which (when viewed in the direction of the plane at right angles to the plane of the paper) may be either round, oval, or octagonal. in form. (See Fig. 1.) On the peripheral edges of the casings 1 and 2 are formed the anges 3 and 4,

between which the diaphragm 5, preferably of rubber or other suitable resilient or iiexi- 5o ble material, is firmly clamped and secured by the bolts 6, which are arranged at suitable distances apart to form a tight joint between said back casing and diaphragm.

The valve-seat nipple 7 is provided with a suitable coupling SX, by which the apparatus is connected to a reservoir wherein carbonicacid gas or other fluid under pressure is confined, and has its inner end of a conical form, the blunt point of which forms a seat for the valve 8. The inner end of the nipple 7 is also threaded to accurately fit the threaded nipple or union 9, which is also threaded to iit the threads formed in the stem 10, formed integral on the top of the rear casing 1. The inner projecting end 11 of the union 9 is of a lesser external diameter than the interior diameter of the stem 10 for the purpose of permitting the free exit of the fluid escaping through the reduced bore of the nipple 7 and the openings 13, formed in the reduced end of the union 9, into the chamber 14, formed by the diaphragm 5 and the rear casing 1. The valve 8 is preferably circular in form and is adapted to move longitudinally in its guideway (formed in the inner reduced end 1l of the union 9) to open and to close the valve. The face of the valve 8 is cupped or otherwise recessed to receive a removable seat or face 8, (preferably of vulcanite, or it may be of a softer baser metal than that of the valve-seau) which bears against the valve-seat formed on the end of the nipple 7, and thus forms a close joint to retain the How of the iiuid. On the back of the valve 8 is formed the stem 15, which is threaded to accurately fit the threads formed in the adj usting-nut 16, which also moves longitudinally in its guideway with the valve.

17 designates the regulating-lever, having its longer arm provided with the nipple 18, adapted to engage the counter-spring 19, supported in the recess 20, formed in the rear casing 1, and has its shorter arm curved eccentrically or of a cam shape to engage the friction-roller 21, journaled in the lugs 22, formedontheback of the adj usting-nut 16, said eccentric end of the regulating-lever being fulcrumed in the guide-cap 23 and secured firmly to the inner surface of the rear casing 1. It is important that the curvature of shorter arm of the regulating-lever 17 be so formed that when moved the movement of the valve'8 IOO surface bearing upon said roller, and a suit-` able pressure-spring opposing said diaphragm and opposite said lever, substantially as described.

2. In a fluid-pressure regulator, the combination, with the front and rear casings thereof and an interposed diaphragm, of a regulatinglever having unequal arms and fulcrumed in said rear casing and having its longer arm operated by said diaphragm and its shorter arm provided with a cam-surface, a valve-seat secured in said rear casing and a valve thereon, a valve-adjusting nut on the stem of said valve, and an antifriction-roller, said valve being operated by the short arm of the lever through the medium of said roller and camsurface bearing upon said roller, the curvature of said surface being such as to produce regular increments of distance of the valve from its seat, and a suitable pressure-spring opposing said diaphragm and opposite said lever, substantially as described.

3. In a Huid-pressure regulator, the combination, with the front and rear casin gs thereof and an interposed diaphragm, of a lever having unequal arms fulcrumed in said casing, a diaphragm counter-spring between said lever and diaphragm, a valve-seat secured in said rear casing and a valve on said seat, and a suitable pressure-spring opposing said-diaphragm and opposite said lever, substantiallyl as described.

4. In a fluid-pressure regulator, the combination, with the front and the rear casings thereof and their yielding interposed diaphragm, of a regulating-lever having unequal arms and fulcrumed in said casing, a dlaphragm counter-spring fulcrumed between said casing and diaphragm and having its' free end interposed between said diaphragm and lever, a valve-seat secured in said rear' seat secured in the rear of said casing, a valveV thereon arranged to engage the shorter arm of said lever, a concaved plate, a compressed spring pressing upon said diaphragm through the medium of said plate and lalong the periphery thereof, opposing the Huid-pressure upon the other side of the diaphragm, a screw adjustment for the pressure of the spring, a central disk carried by said plate, abutting against the diaphragm to support the same against'the central pressure thereon, and a screw adjustment for said disk, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

CHARLES J. RINDERKNECl-IT. Witnesses:

THOMPSON R. BELL, JAMES B. CURTIS. 

